Helium - Helium lets you accept payments by credit card for anything you want to sell online.
YouTube Messenger - YouTube in-app video sharing and messaging
Product Hunt Shell - A geeky, web-based shell for browsing Product Hunt
Kiwi Music Player - Listen to any track on youtube on this Mac App
Screen Commander - Blank your screens at the click of your mouse.
YouTube Vanced - Vanced is a modded version of YouTube with many features such as adblocking and background playback